Distinguished

Hi All,
I have nis 2011 and my only email client is windows live mail which I've set as
the default mail. No other email client is used or even set up. My question is probably
a silly one but would it not be a waste of system resources to have email protection
enabled in nis2011 if you use only windows live mail , or any web based email for that
matter? It might not be a huge footprint but what's the sense, I'm figuring.